Looking at the energy data for LL78, this Isle of Anglesey district scores an average of 55 out of 100, placing it below the national average. Compared to the national average of 67, that puts LL78 below the norm for England and Wales. The most common rating band is C, with 13.2% of homes rated A or B and 41.3% in the C or D bands. Meanwhile, 24.6% of homes sit in the F or G bands — the least efficient categories. In practical terms, a C rating suggests reasonably efficient homes, though there is still room for improvement on heating and insulation.

The area is characterised by houses. Around 84% of properties are owner-occupied . Oil-fired heating is common in this part of LL78, reflecting the more rural character of the area and limited mains gas coverage.

There is genuine room for improvement here. If every recommended upgrade were carried out, the average score could climb from 55 to 80 — a 25-point jump that would lift the typical rating to C. That is a substantial gain, suggesting many homes are missing basic efficiency measures. If you live in LL78 and want to reduce your energy bills, start with our guide to loft insulation — it is one of the most cost-effective upgrades you can make.